codeigniter input required function in php
The "required" function in CodeIgniter's Input class specifies that a form field must contain a value. If the field is empty, the form validation will fail. Here's how to use it:
$this->form_validation->set_rules('username', 'Username', 'required');
Explanation:
- $this->form_validation->set_rules()
is used to set validation rules for a form field.
- The first parameter 'username' is the name of the form field.
- The second parameter 'Username' is the human readable name of the field.
- The third parameter 'required' specifies that the field must contain a value.
This ensures that the 'username' field in the form is required and must have a value for the form validation to pass.